CVE-2026-78587
Last modified
CVE-2026-78587 is a low-severity vulnerability rated 3.1/10 on the CVSS scale. Incorrect Authorization (CWE-863) in Fleet Server can lead to a denial of service of agent upload operations via Privilege Abuse (CAPEC-122). Fleet Server does not correctly verify session ownership during multi-part data upload operations, allowing any authenticated agent to interfere with the active upload sessions belonging to other enrolled agents.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
Incorrect Authorization (CWE-863) in Fleet Server can lead to a denial of service of agent upload operations via Privilege Abuse (CAPEC-122). Fleet Server does not correctly verify session ownership during multi-part data upload operations, allowing any authenticated agent to interfere with the active upload sessions belonging to other enrolled agents.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Elastic | Fleet Server | >= 8.0.0, < 8.19.16 |
| Elastic | Fleet Server | >= 9.0.0, < 9.3.5 |
| Elastic | Fleet Server | >= 9.4.0, < 9.4.2 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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